Grain Systems PNEG-1851 - Manual (Page 51)

Chapter 5: The Drying Modes
Figure 5-10 Dual-setpoint temperature control scheme in the dry and cool operation
NOTE: In full-heat operation, the cooling phase is simply bypassed. As a result, the unloading phase
starts immediately following the drying phase, allowing uncooled, hot grain to be discharged from
the dryer.
Staged Batch Based on Drying Time and Grain Temperature
The time and temperature control scheme in staged batch uses the first reached of these two control
parameters to dictate the duration of the drying phase. Use this control scheme when both the drying time
and the dry grain’s temperature must not surpass a certain value.
In the time and temperature control scheme, you enter the following parameters:
• The drying time
• The grain temperature setpoint
• The temperature setpoint of each plenum
As shown in the figure that follows, the drying phase starts when theload auger fill switch is activated, and
stops when the grain temperature reaches its setpoint or after the drying time elapses, whichever comes
first. A cooling phase immediately follows, and the cool grain is then discharged from the dryer during the
unloading phase.
PNEG-1851 Vision N2 51